Title :
Effect of IQ Mismatch Compensation in an Optical Coherent OFDM Receiver
Author :
Chung, Hwan Seok ; Chang, Sun Hyok ; Kim, Kwangjoon
Author_Institution :
Electron. & Telecommun. Res. Inst., Daejeon, South Korea
fDate :
3/1/2010 12:00:00 AM
Abstract :
The performance enhancement using the Gram-Schmidt orthogonalization procedure (GSOP) for compensating transmitter (Tx) and receiver (Rx) in-phase/quadrature (IQ) mismatch in the coherent optical orthogonal frequency-division-multiplexing system is investigated. The analytic result containing frequency offset is presented to describe the different behavior of Tx and Rx IQ mismatch. Bit-error-rate curves measured at back-to-back and 1040-km transmission over single-mode fiber indicate that the GSOP is more efficient to compensate of Rx IQ mismatch than Tx IQ mismatch.
Keywords :
OFDM modulation; amplitude modulation; error statistics; high-speed optical techniques; light coherence; light transmission; optical fibre communication; optical modulation; optical receivers; optical transmitters; phase modulation; Gram-Schmidt orthogonalization procedure; bit-error-rate curves; coherent communication; coherent optical orthogonal frequency-division-multiplexing system; dispersion-compensation-fiber-free transmission; high-speed optical communication system; in-phase-quadrature mismatch compensation; optical coherent OFDM receiver; optical coherent OFDM transmitter; polarization-mode-dispersion tolerance; single-mode fiber; Coherent communication; in-phase/quadrature (IQ) mismatch; orthogonal frequency-division multiplexing (OFDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2039208
